Rotational MoldingBlow MoldingThermoforming

Chapter 6.4,5,8

RotationalMolding

  THE ROTATIONAL MOLDING PROCESS

                                                                 

http://www.ferryindustries.com/rot_mold.html

class.et.byu.edu/.../ rotationalmolding.htm

Blow Molding

www.paarloplastics.com/ public/blowmolding.cfm

www.devco-design.com/ bl-mold.htm

www.riken.go.jp/lab-www/ mat-fab/blow/PETBlow.html

www.fluent.com/software/ polyflow/blow.htm

Extrusion Blow Molding Animation (from Fluent, CFD software)

Blow Molding Animation (from Fluent, CFD software)

www.fluent.com/software/ polyflow/blow.htm

Thermoforming

Vacuum FormingVacuum Forming is accomplished by heating the plastic sheet until it is pliable enough to be vacuumed either into a female mold or over a male mold.                         

www.pmwproducts.com/ thermoforming.html

www.fluent.com/.../ thermoforming.htm

Pressure FormingPressure Forming is nothing more than Vacuum Forming with pressure assist to the forming process to enable crisper detail and sharper features. Pressure Forming utilizes pressurized air to push the heated sheet into the cavity. Pressure formed parts can resemble the detail of injection molded parts at a fraction of the tooling cost.

                        

www.pmwproducts.com/ thermoforming.html